Combined feed-water heater and water-cooled spark-arrester for locomotives and the like.



A. ANDERBERG. COMBINED FEED WATER HEATER AND WATER COOLED SPARK ARRESTER FOR LOCOMOTIVES AND THE LIKE.

APPLICATION FILED FEB. 29. 1915.

1 ,201 ,9 l 2. Patented Oct. 17, 1916.

2 SHEETS-SHEET 1- m: Nrmms Ferns ca. FHOW-LIYHQ. WASHINGTON. n c.

A. ANDERBERG. COMBINED FEED WATER HEATER AND WATER COOLED SPARK ARRESTER FOR LOCOMOTIVES AND THE LIKE.

APPLICATION FILED FEB. 29. 1916.

Patented Oct. 17, 1916.

2 SHEETS-SHEET 2 c/wa $3.51

u Q Q ANDEBS ANDERBERG, or MALMO, swnnniv.

COMBINED FEED-WATER HEATER nn waTnn-oooLnn srann-annnsrnn non LOCOMOTIVES AND THE LIKE. I

Specification of Letters 'l atent.

ramm d Oct. 17,1916.

Application filed February 29, 1916. Serial No. 81,169.

To all whom it may concern I V Be it known that I, ANnnRs ANDERB RG, a citizen of Swedeinand residing at Malmo,

- Sweden, mechanical engineer, have invented a new and Improved Combined Feedfivater Heater and ater-Cooled Spark-Arrester tor Locomotives and the like,'of which the following is a full, clear, and exact description. e r j My invention relates to a combined feed water heater and water-cooled spark arrester for locomotives, portable steam engines and such steam plants in general in which spark arresters may be needed.

The invention will be fully understood by referring to the accompanying drawing, in which,

Figure 1 shows the fore part. of a locomotive boiler with the smoke box in longi-' tudinal section. Fig. 2 shows a vertical cross section through the smoke box, and Fig. 3 1s a horlzontal section of the spark arrester or feed heater proper.

According to the present invention a set of vertical pipes 2 is arranged under the lower end of the chimney, these pipes being placed at'suitable distances from each other in such a way that they form a cylindrical ring around the lower end ofthe chimney. In the apparatus shown on the drawing the set of pipes consists of several rings of vertical pipes arranged concentrically in such a way that the pipes in the ditterent rings do not stand radially in rows but so that the flue gases and the smoke passing between them to the chimney must zigzag. The pipes 2 are at'their upper and lower ends fastened to ring shaped water chambers 3 and L of which the upper one is connected with the lower opening of the chimney 1. The central opening in the lower water chamber 4 is covered by means of a plate 5 in orderto prevent the smoke from the upper water chamber 3 through the pipe 8 to the boiler. V

The upper sheet of the upper water chamher 3 is conveniently provided with plugs 9 placed opposite the upper ends of the pipes in order to facilitate the cleaning of the pipes on their inner sides, but the same chamber can also be provided with a detachable cover for the same purpose. The lower water chamber eL may be provided with. a door 10 or the like through which dirt and filth in the chamber may be removed. r

lVliile I have described certain mechanism as the embodiment of my invention, it will be understood that the same can be still further modified and still keep within the spirit of the invention and that the invention may be applied to other designs of machines than the one shown in the draw-' ing. Thus, for example, the pipes 2 may be arranged otherwise than lIl a cylindrical ring and the water chambers need not have From the foregoing, it will be seen that the boiler capacity will be increased essentially at the same time as an eiiective spark arrester is obtained on account of the solid ingredients in the flue gases being intensively cooled which helps to arrest the sparks in a high degree. a I

What I claim as new and desire to secure by Letters Patent, is I 1. In combination, a boiler having a smoke box at one end, a smoke stack in the smoke box, a water heating chamber having a central opening, said openingregistering with the smoke stack, the lower end of the smoke stack being attached to the water heating chamber and snugly fitting around the openin therein to cause all the escaping products 0' combustion to pass through the opening to said stack, a second water heating chamber spaced from and in alinement with the first mentioned chamber, a plurality of spaced pipes connecting the two chambers, inlet and outlet feed water pipes communicating with the two chambers, and an exhaust nozzle in the smoke box and extending through the second mentioned chamber and terminating intermediate the two chambers.

2. In combination, a boiler having a smoke box at one end, an annular water heating chamber having a central opening and located in the smoke box near the upper portion of the latter, a smoke stack attached -to the inner water heating chamber and communicating with the central opening in the latter, said stack fitting snugly the water heating chamber to cause all the escaping products of combustion to pass and in alinement with the first mentioned water heating chamber, a plurality of cir cula-rly arranged sets of pipes connecting the two chambers, the pipes of one set being disposed substantially in line with the spaces between the spaces of the adjacent setof pipes, inlet and outlet pipes communicating with the chambers, a plate for closing the central opening formed by the lower annular water heating chamber to cause all the escaping products of combustion passing tothecentral opening to pass through the space formed between the two water heating chambers and an exhaust nozzle extending centrally through the plate and terminating intermediate the two water heating chambers to force all the escaping gases to pass through the space and through the central opening in the upper chamber to the stack.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

ANDERS ANDERBERG. Witnesses: i

' H. BRAUZEN,

FRED FLERON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

